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| 187 | Philips goes after Wi-Fi with range of Li-Fi office lighting (簡訳:フィリップスはLi-Fiオフィス照明の範囲でWi-Fiに取って代わる) | - | |
| ComputerWeekly.com | 2019-06-19 18:20 | ????0? | |
| The Trulifi 6002 series is designed for offices, healthcare, hospitality and transport markets using Li-Fi systems with two-way infrared light. Signify said this product supports bandwidth up to 150Mbps with an infrared beam of about 2.2m diameter per transceiver at 2m height, which is the average height of desks in a typical office space.Ed Huibers, head of business development at Signify.com, said: “The wireless spectrum is getting quite full. We have found that in the past few years, we can communicate in the same way as Wi-Fi by modulating light. The principal is not new. But now we are able to bring it up to usable speeds for office work and we are integrating these Li-Fi modules into light fittings.”According to Huibers, in most applications Li-Fi is as fast as, if not faster than Wi-Fi. “If you buy a 1,000Gbps Wi-Fi router, it is shared with 100 people,” he said. “There is contention. From a user perspective, in most applications, you will get 10-150Mbps connectivity. Li-Fi also has a much higher level of reliability, unlike Wi-Fi, which is a very unstable connection.”Up to 16 devices can connect to each Li-Fi module, which means there is less network contention than with Wi-Fi connectivity. Huibers said this has benefits in application areas where fast, reliable connectivity is needed. One example is in media, where users may need to transfer large files back and forth between mobile workstations and central file severs connected to the internal corporate network.Christoph Ruys, business development manager for the company, said: “We wanted good-quality, energy-efficient lighting and wireless connectivity capable of handling high-resolution images, artwork and big data files. We have gone from offering our staff and clients 5Mbps to 150Mbps, and we can roam around freely as one light point hands off to another seamlessly.” -- ???????? | |||
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